It's in Kurt's nature to return a smile given, even when that means showing more than perhaps is wise of his narrow teeth. The tips are sharp, but he's old enough now to hide that under most circumstances.

For a few moments he watches the dolphins in silence, breaking the silence with a soft question. "To ask you whether I am hallucinating all this would be very silly, wouldn't it? To expect the truth if I were and you were part of it?"